NPK of super soils?

Has anyone ever had their super soil tested, or at least tried to calculate the NPK contents of their prepared soil?

Ya i did mine the other day ph 6, N was high, P was low, and K was normal level. Not sure what to do with it now any advice would bd great!

Sounds like your soil is a little hot right now. I'd add a bit of dolomitic lime and something nutrient free, like peat or coir, even perlite if you need more root space and better drainage. Have you already added any lime?

Sounds to me like it is not fully inoculated yet. I tested mine at 30 days and it claimed to be low to normal fertility on N, P, and K tests. Keep it moist and use a fungal inoculant. The pH will vary wildly while it is cooking. The colonies have to balance the different forms of nitrogen (nitrite, nitrate, and ammonia). If it still is not balanced in a few weeks - go ahead and add a little bit of lime.....a little bit goes a long way.

Add how much dolomitelime per gallon of soil should i add?

Depends on the pH of your soil. I add very little. About 1/4 -1/2 cup per 70 gallons of soil, but I live in an area with high pH soil and high pH water. Because of this, I tend to have to top dress with sulfur at least once a grow....and I use more bacterial inoculates that fungal.
If your soil is higher in pH than my base is, and your water is a bit acidic, it will be different for you.

Rising Moon doesn't use any, but adds french clay to his soil to add calcium and magnesium - along with many other minerals. He does this because it is more bio-available in this form and it's basically a pH neutral source.

Okay when i first did my super soil mix i added 1/2cup of lime for a half recipe of subs mix should i maybe add just a bit more before i transplant the soil? they are in garbage bags now ready for transplant

I did the ph test and it was reading 6.0 will adding lime increase my soils ph and P value?

I have the soil mix split up into garage bags roughly 15gallons per bag should i add just a bit of lime before transplant? Or any other products to help stabilize before transplant?

Adding more lime will increase ph to 7 and stabilize there. It is not a good source for phosphorous.

shvantz said:

I have the soil mix split up into garage bags roughly 15gallons per bag should i add just a bit of lime before transplant? Or any other products to help stabilize before transplant?

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Test your soil and add fine or flour grade dolomite lime to bring your soil to 7, if it is acidic You don't have to be worried that much about using to much dolomite, just mix it well with your soil. For a 15 gallon pot, about 1/2 of a cup will be fine.